【China Molybdenum Industry News Network】
JFE expects 21% chromium content can replace the SUS304 stainless steel market. Japan has developed fine grain high strength steel in Japan application environment-friendly ultra-fine grain steel production technology (PROTEUS) has successfully developed 650MPa class high strength steel, the product grain size of 1m. This is the person in charge of the project recently revealed.
This project started from fiscal 2002 to fiscal 2006 have been carried out 5 years, aimed at developing the basic environment-friendly steel production technology. The person in charge, taking into account the recycling of steel, in the absence of the premise of using rare earth materials, the research team has reduced the grain size of low carbon steel to 1m, and the strength of steel increased by 2 times. Now able to produce stable 650MPa grade hot-rolled steel sheet, the thickness of 2mm, width is 1300mm. If the steel structure for the production of automobiles, the volume of steel can be reduced by about 20%, as compared to conventional steel, the strength of this steel has increased at least 50%.
Use this new plate, the weight 12001600kg passenger car, the amount of steel reduced from 400kg 20%, r of about 80kg. Such plates can be used in shipbuilding and bridge construction, fine grain high strength steel with high strength and fatigue resistance. Du Feng translated JMB2007.08.06 message
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